The Cartoon Network Wiki
The Cartoon Network Wiki

Underdog is an American animated television series that ran from October 3, 1964, to March 4, 1967 starting on the NBC network until 1966, with the rest of the run on CBS, under the primary sponsorship of General Mills, for a run of 62 episodes. The show continued in syndication until 1973.

Underdog, Shoeshine Boy's heroic alter ego, appears whenever love interest Sweet Polly Purebred is being victimized by such villains as Simon Bar Sinister or Riff Raff. Underdog nearly always speaks in rhyming couplets, as in "There's no need to fear, Underdog is here!" His voice was supplied by the late Wally Cox.


In 1959, handling the General Mills account as an account executive with the Dancer Fitzgerald Sample advertising agency in New York, W. Watts Biggers teamed with Chet Stover, Treadwell D. Covington, and artist Joe Harris in the creation of television cartoon shows to sell breakfast cereals for General Mills. The shows introduced such characters as King Leonardo, Tennessee Tuxedo, and Underdog. Biggers and Stover contributed both scripts and songs to the series. When Underdog became a success, Biggers and his partners left Dancer Fitzgerald Sample to form their own company, Total Television, with animation produced at Gamma Studios in Mexico. In 1969, Total Television folded when General Mills dropped out as the primary sponsor (but continued to retain the rights to the series until 1995; however, they still own TV distribution rights through NBCUniversal Television Distribution).

Abroad and in syndication

The syndicated version of The Underdog Show consists of 62 half-hour episodes. The supporting segments differ from the show's original network run. The first 26 syndicated episodes feature Tennessee Tuxedo as a supporting segment. (Tennessee Tuxedo originally aired as a separate show and also has its own syndicated adaptation.) Thereafter, for most of the balance of the package, the middle segments include Go Go Gophers and Klondike Kat for three consecutive half-hours and Tennessee Tuxedo in the fourth. Commander McBragg is featured in the majority of episodes, replaced by three segments of The Sing-A-Long Family (in shows one-three, 28-30, and 55-57). The final two syndicated Underdog half-hours feature two one-shot cartoons that were originally part of an unsold pilot for a projected 1966 series, The Champion (Cauliflower Cabbie and Gene Hattree), with Commander McBragg appearing in show 61 and Go Go Gophers in show 62.

The syndicated series, as shown in the United States, is a potpourri of segments from previously aired versions of the show. Prior to a 1994 remaster, each episode included a "teaser" at the top of the show, asking viewers to stay tuned for a clip from "today's four-part story." (This originates from a 1969–1973 NBC Saturday morning rerun version of the show.) However, never more than two parts of the Underdog stories were ever shown in any half-hour program. Prints of such would either be followed by a closing and credits or no credits at all. The closing (which showed the first portion of a variation of the Underdog theme showing a giant terrorizing the city with George S. Irving, the series narrator, saying, "Looks like this is the end! But don't miss our next Underdog Show!" in place of the theme music) followed by the end credits (re-edited from the cast credits for Underdog and Tennessee Tuxedo), originated from a 1965 repackaged syndicated series, Cartoon Cut-Ups, which originally featured Underdog, Tennessee Tuxedo, and Commander McBragg.

For many years starting with NBC's last run in the mid-1970s, all references to Underdog swallowing his Super Energy Pill were censored, most likely out of fear that kids would see medication that looked like the Underdog pills (red with a white "U" on them) and swallow them. Two instances that did not actually show Underdog swallowing the pills remained in the show. In one, he drops pills into water supplies; in the other, his ring is damaged and he explains that it is where he keeps the pill—but the part where he actually swallows it was still deleted.

Most stories had multiple parts, but the first four were stand-alones:

  • "Safe Waif", the pilot, featured a rescue from a bank vault, but no villain. Underdog is shown causing major destruction while trying to help people.
  • "March of the Monsters", the first appearance of Sweet Polly Purebred, has giant robots running amok.
  • "Simon Says" is the first appearance of Simon Bar Sinister. "Simon says HOLD IT!" is the maniacal refrain, as Bar Sinister uses a weird camera to turn his victims into full-sized, two-dimensional photographs.
  • "Tricky Trap by Tap Tap" is the epilogue to the multi-part story "From Hopeless to Helpless" featuring Riff Raff.

Cartoon Network aired the program in 1996, which played on Saturday nights at 11:30pm and Sunday mornings at 9:30am. In 1998, prior to its removal from the channel’s schedule, half of each episodes started airing during early morning hours around 4:30am on Mondays while still airing half at 11:30pm on Saturdays, causing audiences to loose half of the episode and plot. The show was later replaced by Dudley Do-Right in June 1999, which played during the then-upcoming release of the live action adaptation based on the cartoon.

Underdog also aired on Australian Broadcasting Corporation on February 18, 1966. In 1995, Biggers, Stover, Covington, and Harris (with General Mills) negotiated a sale of their creations to Saturday Night Live producer Lorne Michaels' Broadway Video, who later sold the rights to Golden Books. The 1996 remake of the intro was heavily criticized due to an actor briefly imitated Underdog very badly and the choir sing the theme song totally out-of-tune, which this version was considered god-awful ever since. When Classic Media took over Golden Books, it acquired the underlying rights to Underdog, resulting the 1996 intro was wiped from existence.

In 2012, Classic Media was sold to DreamWorks Animation, and ultimately became the property of the series' current owners, Universal Television. TV Guide ranked Underdog as number 23 on its "50 Greatest Cartoon Characters of All Time" list, IGN ranked it as number 74 on its Best 100 Animated Series list.


Underdog was an anthropomorphic dog superhero. The premise was that "humble and lovable" Shoeshine Boy was in truth the superhero Underdog. George S. Irving narrated and comedy actor Wally Cox provided the voices of both Underdog and Shoeshine Boy. When villains threatened, Shoeshine Boy ducked into a telephone booth, where he transformed into the caped and costumed hero, destroying the booth in the process when his superpowers were activated. Underdog almost always spoke in rhyme:

"When Polly's in trouble (or When help is needed), I am not slow, It's hip-hip-hip and AWAY I GO!!!"

Underdog's most frequent saying when he appeared was:

"There's no need to fear-- Underdog is here!"

The majority of episodes used a common template as the final scene. A crowd of people looking up into the sky would say, "Look in the sky!" "It's a plane!" "It's a bird!" After this, a glasses-wearing woman (a little girl in some episodes) would exclaim, "It's a frog!" Another onlooker would respond, "A frog?" To this, Underdog replied with these words:

"Not plane, nor bird, nor even frog, It's just little old me ... [at this point, Underdog would crash into something, then sheepishly finish] "Heh-heh-heh. Underdog."

Underdog usually caused collateral damage. Whenever someone complained about the damage, Underdog replied:

"I am a hero who never fails; I cannot be bothered with such details."

The villains almost always managed to menace Sweet Polly Purebred (voiced by the late Norma MacMillan), an anthropomorphic canine TV reporter, as part of their nefarious schemes; she was a helpless damsel in distress most of the time and had a habit of singing, "Oh, where, oh, where has my Underdog gone? Oh, where, oh, where can he be?" She would sing this to the music of the song "Oh Where Has My Little Dog Gone" whenever in jeopardy.

Recurring villains included:

  • Simon Bar Sinister, voiced by the late Allen Swift, is a mad scientist with a voice reminiscent of Lionel Barrymore. He is the wickedest man in the world and has an assistant named Cad Lackey. A bar sinister is a diagonal line, running from top right to bottom left on medieval family coats of arms, a symbol that indicates the person is a bastard by birth; this was an inside joke typical of animation writing at the time.
  • Riff Raff, also voiced by Allen Swift, is an anthropomorphic wolf gangster based on noted actor George Raft. His right-hand man is Mooch, while other gang members (seen in one episode each) include Sandy the Safecracker, Spinny Wheels (who drives the gang's getaway car as only appears in two episodes, Whistler's Father and Riffraffville), Dinah Mite (the underworld's greatest bomb tosser, who was since scrapped after her debut Whistler's Father), Nails the Carpenter, Needles the Tailor, Smitty the Blacksmith, and the Witch Doctor.
  • Other villains included The Electric Eel (a.k.a. Slippery Eel), Battyman, Tap Tap the Chisler (an evil look-alike of Underdog who does not speak in rhyme), and Overcat. Underdog also regularly faced enemies from alien worlds, such as the Marbleheads from the planet Granite, the Magnet Men of the Magnet Planet, the aliens from the planet Zot, and the Flying Sorcerers of the Saucer Planet.

The majority of the Underdog adventures were presented in the form of four-part serial episodes. Other cartoons, including Go Go Gophers and The Hunter, filled the middle segments. A 1969–1973 NBC run featured all four parts of an Underdog storyline in one half-hour show. The series was first syndicated in the U.S. in the mid-1960s under the title Cartoon Cut-Ups, which presented two Underdog segments along with Tennessee Tuxedo and His Tales and The World of Commander McBragg. This package was revised in the 1970s under the Underdog Show title, now including all 124 Underdog segments and featuring Tennessee Tuxedo, Commander McBragg, Go Go Gophers, and Klondike Kat in various episodes. A syndicated package prepared for distribution outside the United States (which also aired on the Boomerang cable network) usually featured two brief Underdog episodes in a single show along with a wider variety of other Total TV cartoon shorts which appeared between such segments: Go Go Gophers, The King and Odie, Klondike Kat, Tennessee Tuxedo, The Hunter, Tooter Turtle, and Commander McBragg.

On these interstitial cartoons, Tennessee Tuxedo, a penguin, was accompanied by two friends, slow-witted walrus Chumley and Professor Phineas J. Whoopie, "the Man With All The Answers". Tennessee Tuxedo was voiced by Don Adams of Get Smart (and later Inspector Gadget) fame; the knowledgeable Professor Phineas J. Whoopee was voiced by Larry Storch of F Troop fame. With the possible exception of Tennessee Tuxedo, none of these characters ever reached Underdog's level of popularity.


Note: This list only includes what episodes aired on Cartoon Network.

Episode 301
  • Underdog #1 (Episode 1: Safe Waif) (pilot cartoon; no on-screen title shown)
  • Tennessee Tuxedo #2 (The Rain Makers) (902, 972)
  • The Sing-A-Long Family #1 (Picnic) (Sing-A-Long Family cartoon titles are unofficial and do not appear on screen) (also appears in syndicated shows #328, 355)
  • Underdog #2 (Episode 2: The March Of The Monsters)
Episode 302
  • Underdog #3 (Episode 3: Simon Says)
  • Tennessee Tuxedo #4 (Telephone Terrors or Dial M For Mayhem) (904, 974)
  • The Sing-A-Long Family #2 (Skating) (also appears in syndicated shows #329, 356)
  • Underdog #32 (Episode 4: Tricky Trap By Tap Tap) (Note: Tricky Trap By Tap Tap is the epilogue of the four-episode serial From Hopeless To Helpless, which is featured later in the series in shows #315 and #316.)
Episode 303
  • Underdog #4 (Go Snow: Episode 1)
  • Tennessee Tuxedo #5 (Giant Clam) (not The Giant Clam Caper) (905, 975)
  • The Sing-A-Long Family #3 (Fair) (also appears in syndicated shows #330, 357)
  • Underdog #5 (Go Snow: Episode 2)
Episode 304
  • Underdog #6 (Go Snow: Episode 3)
  • Tennessee Tuxedo #6 (Tick Tock) (906, 976)
  • Commander McBragg #4 (The North Pole)
  • Underdog #7 (Go Snow: Episode 4)
Episode 305
  • Underdog #8 (Zot: Episode 1)
  • Tennessee Tuxedo #7 (Scuttled Sculptor) (907, 977)
  • Commander McBragg #5 (Khyber Pass)
  • Underdog #9 (Zot: Episode 2)
Episode 306
  • Underdog #10 (Zot: Episode 3)
  • Tennessee Tuxedo #8 (Snap That Picture!) (908, 978)
  • Commander McBragg #6 (Ace Of Aces)
  • Underdog #11 (Zot: Episode 4)
Episode 307
  • Underdog #12 (The Great Gold Robbery: Episode 1)
  • Tennessee Tuxedo #9 (Zoo‘s News) (909, 979)
  • Commander McBragg #7 (Niagara Falls)
  • Underdog #13 (The Great Gold Robbery: Episode 2)
Episode 308
  • Underdog #14 (The Great Gold Robbery: Episode 3)
  • Tennessee Tuxedo #10 (Aztec Antics) (910, 980)
  • Commander McBragg #8 (Dodge City Dodge)
  • Underdog #15 (The Great Gold Robbery: Episode 4)
Episode 309
  • Underdog #16 (Fearo: Episode 1)
  • Tennessee Tuxedo #11 (Coal Minors) (not Coat Minors) (911, 981)
  • Commander McBragg #9 (Football By Tex Hex)
  • Underdog #17 (Fearo: Episode 2)
Episode 310
  • Underdog #18 (Fearo: Episode 3)
  • Tennessee Tuxedo #12 (Hot Air Heroes) (912, 982)
  • Commander McBragg #10 (Rabelasia)
  • Underdog #19 (Fearo: Episode 4)
Episode 311
  • Underdog #20 (The Big Shrink: Episode 1) (not Shrinking Water)
  • Tennessee Tuxedo #13 (Irrigation Irritation) (913, 983)
  • Commander McBragg #11 (Okefenokee Swamp)
  • Underdog #21 (The Big Shrink: Episode 2)
Episode 312
  • Underdog #22 (The Big Shrink: Episode 3)
  • Tennessee Tuxedo #14 (TV Testers) (914, 984)
  • Commander McBragg #12 (The Flying Machine)
  • Underdog #23 (The Big Shrink: Episode 4)
Episode 313
  • Underdog #24 (The Bubbleheads: Episode 1)
  • Tennessee Tuxedo #15 (By The Plight Of The Moon) (915, 985)
  • Commander McBragg #13 (The Giant Elephant)
  • Underdog #25 (The Bubbleheads: Episode 2)
Episode 314
  • Underdog #26 (The Bubbleheads: Episode 3)
  • Tennessee Tuxedo #17 (Bridge Builders) (917, 987)
  • Commander McBragg #14 (The Great Bird) (not The Giant Bird)
  • Underdog #27 (The Bubbleheads: Episode 4)
Episode 315
  • Underdog #28 (From Hopeless To Helpless: Episode 1)
  • Tennessee Tuxedo #16 (Lever Levity) (916, 986)
  • Commander McBragg #15 (“Chicago” Mobster)
  • Underdog #29 (From Hopeless To Helpless: Episode 2)
Episode 316
  • Underdog #30 (From Hopeless To Helpless: Episode 3)
  • Tennessee Tuxedo #18 (Howl, Howl, The Gang's All Here) (918, 988)
  • Commander McBragg #16 (The Monster Bear)
  • Underdog #31 (From Hopeless To Helpless: Episode 4)
Episode 317
  • Underdog #33 (The Witch Of Pickyoon: Episode 1) (not The Wicked Witch Of Pickyoon)
  • Tennessee Tuxedo #19 (Sail Ho!) (not Sail On, Sail On) (919, 989)
  • Commander McBragg #17 (The Kangaroo)
  • Underdog #34 (The Witch Of Pickyoon: Episode 2)
Episode 318
  • Underdog #35 (The Witch Of Pickyoon: Episode 3)
  • Tennessee Tuxedo #20 (Tell-Tale Telegraph) (920, 990)
  • Commander McBragg #18 (The Giant Mosquito)
  • Underdog #36 (The Witch Of Pickyoon: Episode 4)
Episode 319
  • Underdog #37 (Weathering The Storm: Episode 1)
  • Tennessee Tuxedo #21 (Rocket Ruckus) (921, 991)
  • Commander McBragg #19 (The Black Knight)
  • Underdog #38 (Weathering The Storm: Episode 2)
Episode 320
  • Underdog #39 (Weathering The Storm: Episode 3)
  • Tennessee Tuxedo #22 (All Steamed Up) (not Getting Steamed Up) (922, 992)
  • Commander McBragg #20 (The Flying Pond)
  • Underdog #40 (Weathering The Storm: Episode 4)
Episode 321
  • Underdog #41 (The Gold Bricks: Episode 1)
  • Tennessee Tuxedo #23 (Tale Of A Tiger) (923, 993)
  • Commander McBragg #21 (The Old Ninety-Two)
  • Underdog #42 (The Gold Bricks: Episode 2)
Episode 322
  • Underdog #43 (The Gold Bricks: Episode 3)
  • Tennessee Tuxedo #24 (Dog Daze) (Sequel to Tennessee Tuxedo #18/Howl, Howl, The Gang's All Here) (924, 994)
  • Commander McBragg #22 (Our Man In Manhattan) (not Secret Agent In New York)
  • Underdog #44 (The Gold Bricks: Episode 4)
Episode 323
  • Underdog #45 (The Magnet Men: Episode 1)
  • Tennessee Tuxedo #25 (Brushing Off A Toothache) (925, 995)
  • Commander McBragg #23 (Oyster Island)
  • Underdog #46 (The Magnet Men: Episode 2)
Episode 324
  • Underdog #47 (The Magnet Men: Episode 3)
  • Tennessee Tuxedo #26 (Funny Honey) (926, 996)
  • Commander McBragg #24 (The Steam Car)
  • Underdog #48 (The Magnet Men: Episode 4)
Episode 325
  • Underdog #49 (The Phoney Booths: Episode 1)
  • Tennessee Tuxedo #1 (Mixed-Up Mechanics) (901, 971)
  • Commander McBragg #25 (Swimming The Atlantic)
  • Underdog #50 (The Phoney Booths: Episode 2)
Episode 326
  • Underdog #51 (The Phoney Booths: Episode 3)
  • Tennessee Tuxedo #3 (The Lamplighters) (903, 973)
  • Commander McBragg #26 (Fort Apache)
  • Underdog #52 (The Phoney Booths: Episode 4)
Episode 327
  • Underdog #53 (Pain Strikes Underdog: Episode 1)
  • Go Go Gophers #1 (Moon Zoom)
  • Klondike Kat #1 (Honor At Steak)
  • Commander McBragg #27 (The Flying Trapeze)
  • Underdog #54 (Pain Strikes Underdog: Episode 2)
Episode 328
  • Underdog #55 (Pain Strikes Underdog: Episode 3)
  • Go Go Gophers #2 (Trojan Totem)
  • Klondike Kat #2 (Secret Weapon)
  • The Sing-A-Long Family #1 (Picnic) (also appears in syndicated shows #301, 355)
  • Underdog #56 (Pain Strikes Underdog: Episode 4)
Episode 331
  • Underdog #61 (The Flying Sorcerers: Episode 1) (not The Flying Sorceress)
  • Go Go Gophers #4 (Gatling Gophers)
  • Klondike Kat #4 (Hard To Guard)
  • Commander Mc Bragg #31 (Mystifying McBragg)
  • Underdog #62 (The Flying Sorcerers: Episode 2)
Episode 332
  • Underdog #63 (The Flying Sorcerers: Episode 3)
  • Go Go Gophers #5 (The Cleveland Indians)
  • Klondike Kat #5 (The Candy Mine)
  • Commander Mc Bragg #32 (Mammouth Cavern)
  • Underdog #64 (The Flying Sorcerers: Episode 4)
Episode 333
  • Underdog #65 (The Forget-Me-Net: Episode 1)
  • Go Go Gophers #6 (Medicine Men)
  • Klondike Kat #6 (Rotten To The Core)
  • Commander Mc Bragg #33 (The Astronaut) (also appears in syndicated show #358)
  • Underdog #66 (The Forget-Me-Net: Episode 2)
Episode 334
  • Underdog #67 (The Forget-Me-Net: Episode 3)
  • Tennessee Tuxedo #28 (Wreck Of A Record) (928, 998)
  • Commander Mc Bragg #34 (Dam Break) (also appears in syndicated show #359)
  • Underdog #68 (The Forget-Me-Net: Episode 4)
Episode 335
  • Underdog #69 (Whistler's Father: Episode 1) (not Guerilla Warfare)
  • Go Go Gophers #7 (Mesa Mess)
  • Klondike Kat #7 (The Trap Baiting) (not Baiting The Trap)
  • Commander Mc Bragg #35 (The Eclipse) (also appears in syndicated show #360)
  • Underdog #70 (Whistler's Father: Episode 2)
Episode 336
  • Underdog #71 (Whistler's Father: Episode 3)
  • Go Go Gophers #8 (Termite Terror) (not Termite Trainers)
  • Klondike Kat #8 (Gravy Train)
  • Commander Mc Bragg #36 (Ship Of The Desert) (also appears in syndicated show #361)
  • Underdog #72 (Whistler's Father: Episode 4)
Episode 339
  • Underdog #77 (The Silver Thieves: Episode 1)
  • Go Go Gophers #10 (Tapping The Telegraph)
  • Klondike Kat #10 (Plane Food)
  • Commander Mc Bragg #39 (The Lumberjack)
  • Underdog #78 (The Silver Thieves: Episode 2)
Episode 340
  • Underdog #79 (The Silver Thieves: Episode 3)
  • Go Go Gophers #11 (Bold As Gold)
  • Klondike Kat #11 (Banana Skinned)
  • Commander Mc Bragg #40 (The Bronco Buster)
  • Underdog #80 (The Silver Thieves: Episode 4)
Episode 341
  • Underdog #81 (Riffraffville: Episode 1)
  • Go Go Gophers #12 (Up In The Air)
  • Klondike Kat #12 (Up A Tree)
  • Commander Mc Bragg #41 (Echo Canyon)
  • Underdog #82 (Riffraffville: Episode 2)
Episode 342
  • Underdog #83 (Riffraffville: Episode 3)
  • Tennessee Tuxedo #30 (Helicopter Hi-Jinks) (930, 1000)
  • Commander Mc Bragg #42 (Tightrope)
  • Underdog #84 (Riffraffville: Episode 4)
Episode 343
  • Underdog #85 (The Tickle Feather Machine: Episode 1)
  • Go Go Gophers #13 (The Big Banger)
  • Klondike Kat #13 (Pie Fly)
  • Commander Mc Bragg #43 (Lake Tortuga)
  • Underdog #86 (The Tickle Feather Machine: Episode 2)
Episode 344
  • Underdog #87 (The Tickle Feather Machine: Episode 3)
  • Go Go Gophers #14 (He's For The Berries)
  • Klondike Kat #14 (Jail Break)
  • Commander Mc Bragg #44 (Coney Island)
  • Underdog #88 (The Tickle Feather Machine: Episode 4)
Episode 345
  • Underdog #89 (Underdog Vs. Overcat: Episode 1) (not Underdog Vs. Overcoat)
  • Go Go Gophers #15 (Swamped)
  • Klondike Kat #15 (Fort Frazzle Frolics)
  • Commander Mc Bragg #45 (Rainbow Island)
  • Underdog #90 (Underdog Vs. Overcat: Episode 2)
Episode 346
  • Underdog #91 (Underdog Vs. Overcat: Episode 3)
  • Tennessee Tuxedo #31 (Oil's Well) (931, 1001)
  • Commander Mc Bragg #46 (The Insect Collector)
  • Underdog #92 (Underdog Vs. Overcat: Episode 4)
Episode 347
  • Underdog #93 (The Big Dipper: Episode 1)
  • Go Go Gophers #16 (Tanks To The Gophers)
  • Klondike Kat #16 (Sticky Stuff)
  • Commander Mc Bragg #47 (Lost Valley)
  • Tooter Turtle #1 (Nusuiance/Subscribe)
  • Underdog #94 (The Big Dipper: Episode 2)
Episode 348
  • Underdog #95 (The Big Dipper: Episode 3)
  • Go Go Gophers #17 (Indian Treasure)
  • Klondike Kat #17 (Who's A Pill)
  • Commander Mc Bragg #48 (The Orient Express)
  • Underdog #96 (The Big Dipper: Episode 4)
Episode 349
  • Underdog #97 (Just In Case: Episode 1)
  • Go Go Gophers #18 (The Carriage Trade) (not The Horseless Carriage Trade)
  • Klondike Kat #18 (Getting The Air)
  • Commander Mc Bragg #1 (Over The Falls)
  • Underdog #98 (Just In Case: Episode 2)
Episode 350
  • Underdog #99 (Just In Case: Episode 3)
  • Tennessee Tuxedo #32 (Parachuting Pickle) (932, 1002)
  • Commander Mc Bragg #2 (Fish Story)
  • Underdog #100 (Just In Case: Episode 4)
Episode 351
  • Underdog #101 (The Marble Heads: Episode 1)
  • Go Go Gophers #19 (Honey Fun)
  • Klondike Kat #19 (If I'd-A Known You Was Comin‘)
  • Commander Mc Bragg #3 (The Himalayas)
  • Underdog #102 (The Marble Heads: Episode 2)
Episode 352
  • Underdog #103 (The Marble Heads: Episode 3)
  • Go Go Gophers #20 (The Colonel Cleans Up)
  • Klondike Kat #20 (The Big Race)
  • Commander Mc Bragg #28 (Around The World)
  • Underdog #104 (The Marble Heads: Episode 4)
Episode 353
  • Underdog #105 (Simon Says "Be My Valentine": Episode 1)
  • Go Go Gophers #21 (The Raw Recruits)
  • Klondike Kat #21 (Date On The Desert)
  • Commander Mc Bragg #29 (Indianapolis Speedway)
  • Underdog #106 (Simon Says "Be My Valentine": Episode 2)
Episode 354
  • Underdog #107 (Simon Says "Be My Valentine": Episode 3)
  • Tennessee Tuxedo #33 (Wish Wash) (933, 1003)
  • Commander Mc Bragg #30 (The Rhino Charge)
  • Underdog #108 (Simon Says "Be My Valentine": Episode 4)
Episode 355
  • Underdog #109 (Round And Round: Episode 1)
  • Go Go Gophers #22 (Tenshun!)
  • Klondike Kat #22 (Klondike Goes To Town)
  • The Sing-A-Long Family #1 (Picnic) (also appears in syndicated shows #301, 328)
  • Underdog #110 (Round And Round: Episode 2)
Episode 356
  • Underdog #111 (Round And Round: Episode 3)
  • Go Go Gophers #23 (Cuckoo Combat)
  • Klondike Kat #23 (Motorcycle Mountie)
  • The Sing-A-Long Family #2 (Skating) (also appears in syndicated shows #302, 329)
  • Underdog #112 (Round And Round: Episode 4)
Episode 359
  • Underdog #117 (Batty-Man: Episode 1)
  • Go Go Gophers #25 (The Great White Stallion)
  • Klondike Kat #25 (The Island Hideout)
  • Commander McBragg #34 (Dam Break) (also appears in syndicated show #334)
  • Underdog #118 (Batty-Man: Episode 2)
Episode 360
  • Underdog #119 (Batty-Man: Episode 3)
  • Go Go Gophers #26 (Blankety-Blank Blanket)
  • Klondike Kat #26 (The Kat Napper)
  • Commander McBragg #35 (The Eclipse) (also appears in syndicated show #335)
  • Underdog #120 (Batty-Man: Episode 4)
Episode 361
  • Underdog #121 (The Vacuum Gun: Episode 1)
  • Cauliflower Cabbie (Introducing The Champion!)
  • Commander McBragg #36 (Ship Of The Desert) (also appears in syndicated show #336)
  • Underdog #122 (The Vacuum Gun: Episode 2)
Episode 362
  • Underdog #123 (The Vacuum Gun: Episode 3)
  • Gene Hattree (The Trap)
  • Go Go Gophers #27 (The Ironclad) (not The Unsinkable Iron Clad)
  • Underdog #124 (The Vacuum Gun: Episode 4)

During its run on Cartoon Network, three episodes were not included on the schedule due to the episodes' contents:

  • The Molemen was skipped due to Underdog dropped his energy pills into water supply, having people to drink the pill invested water.
  • A New Villain was skipped due to Underdog is brought back to life underwater with electricity in his body after the villain Electric Eel put the hero to death with his electrical device.
  • Simon Says "No Thanksgiving" was skipped due to racial controversy involving Native Americans as Simon Bar Sinister trick them of being enemies to the pilgrims.


  • When syndicated on Boomerang in 2002, episodes 345-346, 349-354, 359-360 were missing from the schedule, yet still retaining the banning approach with The Moleman and A New Villain. One episode Simon Says "No Thanksgiving" finally aired on Boomerang, lifting the ban Cartoon Network made in the 1990s. In 2004, the show was temporarily removed from the Boomerang schedule. However, it returned to the schedule in 2005, playing the missing episodes that were omitted from the early Boomerang schedule. This also aired the banned episode The Moleman, but only for a limited time. The show last ran on the network in 2006.
  • This is one of the many shows that has never been rebooted after its original run. This maybe due to references of drug use including Underdog's energy pill (which this cartoon was produced in the 1960s when drugs were more common) as censorship laws regards this content in children’s media today. This also includes the loss of the original actors, which makes the characters difficult to recast. According to Joe Harris, one of Underdog’s original creators, on an interview in the 2007 DVD release of the show, further plans for Underdog were "put away" in 1969, despite that it ended in 1967.
    • However, there was a live-action adaptation based on the Underdog cartoon which was theatrically released in Summer 2007, as an actual dog portrays the main hero. The film was universally panned due to literally lacking the aspects of the 1960s cartoon. Disney Studios, which made this adaptation, had since ignored the film after releasing it once on DVD and Blu-ray in late 2007. This even scrapped plans for a PS3/Xbox 360 video game based on the movie.